Freaked out

I'm about four weeks away from leaving my job, to work on my own business. TPC is getting bigger and harder to control, and I'm starting a brand new service as part of the company. I'm freaked out because this means that for once I have to be a business person, and draw up business plans, arrange the accounting, organise all that admin stuff. I don't mind admin, but I'm like plenty of other artists out there: I just want to do it, I don't want to worry about the business side of things. My family is pretty supportive, and so are my friends, but the financial set-up is resting quite heavily on my shoulders. While I'm not planning on becoming rich, I would like to work full-time on TPC; something that will be hard to do since I don't charge subscription fees. What freaks me out is that a business company can set up this stuff so easily, and apply for bank loans etc. While my bank is nice and all, I doubt they'll readily hand over money to a person severely unready to work for herself, and to someone who knows nothing about accounting! I've only got a few months to set up the business before I will be forced into a part-time job while the business builds. Will this perpetual focus on money and profits stress me out to the point of not being able to be creative anymore? Or will I have to pull out before it gets going because of lack of funds? Either way... I'm really really worried right now. I'm sure a zillion artists have said this before me: "Why couldn't I have been born a suit?"